Index: trunk/core/kernel/event_manager.php
===================================================================
diff -u -r2060 -r2112
--- trunk/core/kernel/event_manager.php	(.../event_manager.php)	(revision 2060)
+++ trunk/core/kernel/event_manager.php	(.../event_manager.php)	(revision 2112)
@@ -88,17 +88,26 @@
 		 */
 		function HandleEvent(&$event)
 		{
+			if( !$this->Application->prefixRegistred($event->Prefix) )
+			{
+				trigger_error('Prefix <b>'.$event->Prefix.'</b> not registred (requested event <b>'.$event->Name.'</b>)', E_USER_NOTICE);
+				return false;
+			}
+			
 			if (!$event->SkipBeforeHooks) {
 				$this->processHooks($event, hBEFORE);
-				if ($event->status == erFATAL) return;
+				if ($event->status == erFATAL) return true;
 			}
 			
 			$event_handler =& $this->Application->recallObject($event->Prefix.'_EventHandler');
 			$event_handler->processEvent($event);
-			if ($event->status == erFATAL) return;
+			
+			if ($event->status == erFATAL) return true;
 			if (!$event->SkipAfterHooks) {
 				$this->processHooks($event, hAFTER);
 			}
+			
+			return true;
 		}
 		
 		function ProcessRequest()